SPH3UI Exam Review(Thurs Jun 20)

Key Concepts

Kinematics

d-t, v-t, a-t graphs

Big 5 equations

Chase problems

Dynamics

free body diagrams

Newton’s three laws and application

Universal Gravitation

Friction – static and kinetic

Key Concepts Energy Work and Power

work / energy relationship

gravitational potential energy and kinetic energy

conservation of energy

thermal energy (incl. heating diagrams)

Waves and Sound

universal wave equation

reflection and interference

air columns

speed of sound

Doppler effect

Key Concepts

Electricity and Magnetism

Ohm’s Law

series vs parallel circuits

theory of electromagnetism (right hand rule)

electric motor vs generator

Crib Sheet

8 ½ x 11 page

handwritten

no diagrams

no problem examples

no definitions

formulas including variable definitions are

allowed (titles also allowed)

MUST BE HANDED IN WITH EXAM

SPH3UI Exam Review

Questions

Question #1 : KinematicsA sprinter in a 100 m dash has a velocity-time profile

for the first second of the race as shown below:

0.25 0.5 0.75 1 1 2 3 4 5 6

Vel (m/s)

Time (s)

0.25

0.25

0.5

0.5

0.75

0.75

1

1

1

1

2

2

3

3

4

4

5

5

6

6

Determine the sprinters position-time graph (at t=0, .25,

.5, .75 and 1.0 secs) and average acceleration

Question #2 : Kinematics

A Rocket is travelling at 100 m/s when it fires

it’s engines generating an average acceleration of

2.0 m/s2 . While accelerating the rocket travels

20 km.

a. How long does it take for the rocket to travel this 20km?

b. How fast is the rocket going at the end of this acceleration

period?

Question #3 : Kinematics

The tortoise and hare are having a 300m race. The hare

gives the tortoise a 225m headstart and the tortoise

travels at a constant velocity of 0.5 m/s.

Assuming the hare accelerates uniformly from rest at 0.2 m/s2,

does the hare pass the tortoise before the finish line and if so

where?

Finish Line – 300 m

225 m headstart

Question #4 : Dynamics

You are attempting to push your car (that has run out

of gas) on a flat stretch of road. The coefficient of

static friction is 0.80 and coefficient of kinetic friction is

0.60. If the car has a mass of 1500 kg.

a. What is the minimum force you must apply to start the

car moving?

b. What is the amount of force that you must push with to

keep it moving?

Question #5 : Dynamics

Jupiter is the largest planet in the Solar System with a mass of

1.899x1027kg and a radius of 7.149x107m. What would be the

force of gravity on a 1 kg object on the surface of Jupiter?

Compare this to the force on the same object on the surface of

the earth.

Question #6

Energy, Work and PowerWhat

27m

13.5

m

Point D

Point B

Point C

Point A

20m

The average mass of the coaster car is 1,000kg (including

passengers). Assuming zero kinetic energy at the top of the ride

calculate the following:a. If it took 20 seconds to pull the coaster to the top what Power was needed by the

motor to lift the coaster?

b. What would the speed of the coaster be at point D?

Question #7

Energy, Work and PowerDraw a heating diagram and calculate the energy required to melt

2.0kg of ice initially at -30°C and warm it up to 85°C.

specific heat capacity ice

latent heat of fusion

specific heat capacity water

latent heat of vaporization

specific heat capacity water vapour

2,100 J/kg °C

334,000 J/kg

4,180 J/kg °C

2,260,000 J/kg

2,100 J/kg °C

Question #8 : Waves and Sound

A monarch butterfly beats her wings at a frequency of 9Hz. If

the amplitude of the wings motion is 1.5cm, calculate how far

the wings move in one minute.

Question #9 : Waves and Sound

A closed ended air column is 120 cm long. What are the

wavelengths of the first 3 resonant waves?

If the air temperature is 20°C, what is the frequency of these

three waves?

Question #10

Electricity and MagnetismCharacterize the following circuits (find all the missing voltages,

currents and overall power used and show the direction of the

current(s)).

V1 9.0

R1 100.0

R2 200.0

V1 9.0

R1 100.0R2 200.0

Question #11

Electricity and MagnetismState the three main components of an electric motor.

What is the key difference between an electric generator and an

electric motor?

Show the direction of the magnetic field for the following

current carrying conductors.